AMD Ryzen 9 3900X vs. Intel Core i9-9900K | Spec Comparison | Digital Trends
AMD Ryzen 9 3900X: A challenger for Intel's CPU crown
CPU rendering & encoding benchmarks : AMD Ryzen 9 3900X vs. Ryzen 7 3700X vs. Intel Core i9-9900K: Which is the best gaming CPU? - HardwareZone.com.sg
AMD's third-generation Ryzen series is finally available, with comparative reviews of Ryzen 9 3900X and Intel Core i9-9900K available - GIGAZINE
AMD Ryzen 9 3900X gaming benchmarks reveal turning off SMT narrows the performance gap with the Core i9-9900K only in select titles - NotebookCheck.net News
The Mitigation Impact Difference On AMD Ryzen 9 3900X vs. Intel Core i9 9900K Performance - Phoronix